采用化学共沉淀法制备磁性Fe3O4纳米粒子,通过在磁性Fe3O4纳米粒子表面接枝赖氨酸,制备一种新型磁性纳米吸附剂.通过TEM、FT-IR、XRD、VSM对其进行表征,着重研究了其对Cu(Ⅱ)离子的吸附性能.结果表明,溶液pH值能显著影响吸附剂对Cu( Ⅱ)的吸附效果,pH为5时其效果最佳.等温吸附数据符合Langmuir 模型,T=298K、pH=5、V=5mL时,吸附剂的饱和吸附容量qm=22.42mg/g,吸附常数为0.0346L/mg.
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